Product Details: The Dayco Heavy Duty Serpentine Automatic Belt Tensioner is an ideal solution for those looking for a durable and reliable belt tensioner assembly. The pulleys and tensioner are machined from high-strength steel, ensuring durability and longevity. It also features patented flat spring technology, which ensures that the tensioner applies the correct amount of pressure to the belt, ensuring optimal performance. The rugged dual pressed-in pulley bearings further enhance the product's durability, while the EPDM belts with specially treated cords offer excellent resistance to heat, wear, and stretching. With this assembly, you can cut installation time by 50%, making it a cost-effective solution that offers great performance and reliability. FleetPride is your First Click in Heavy Duty®. Direction: Counter Clock Wise No. of Pulleys: 1 Pulley 1 Diameter(mm): 74 Pulley 1 Flat: Yes Pulley 1 Width(mm): 38